Railroad Archives Online
- CollectionD0027 - Timothy Miller Collection
- Series004 - Northern Pacific Railroad Company
- Subseries Level 1009 - Engineering Records
- Subseries Level 2008 - Physical plant drawing
- Subseries Level 3001 - Bridges
- 6623 more...
- ItemBB028587 - Northern Pacific Engineering Drawing: Shaft/Bell Details, Bridge 3.2 (72.2) - Hoquiam River, Washington, undated
- ItemBB028588 - Northern Pacific Engineering Drawing: Gear Stands, Bridge 3.2 (72.2) - Hoquiam River, Washington, undated
- ItemBB028589 - Northern Pacific Engineering Drawing: Cone and Levers, Bridge 3.2 (72.2) - Hoquiam River, Washington, undated
- ItemBB028590 - Northern Pacific Engineering Drawing: 36 Inch Brake Wheel, Bridge 3.2 (72.2) - Hoquiam River, Washington, undated
- ItemBB028591 - Northern Pacific Engineering Drawing: Spur Gear Details, Bridge 3.2 (72.2) - Hoquiam River, Washington, undated
- ItemBB028592 - Northern Pacific Engineering Drawing: Special Coupling Ring, Bridge 3.2 (72.2) - Hoquiam River, Washington, undated
- ItemBB028593 - Northern Pacific Engineering Drawing: Jaw Clutch/Details, Bridge 3.2 (72.2) - Hoquiam River, Washington, undated
- ItemBB028594 - Northern Pacific Engineering Drawing: Special Bevel Gear, Bridge 3.2 (72.2) - Hoquiam River, Washington, undated
- ItemBB028595 - Northern Pacific Engineering Drawing: Detail of Longitudinal Brace, Bridge 52, West of Spire Rock, Montana, undated
- 1096 more...